qgsglobechunkedentity.h

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/***************************************************************************
  qgsglobechunkedentity.h
  --------------------------------------
  Date                 : March 2025
  Copyright            : (C) 2025 by Martin Dobias
  Email                : wonder dot sk at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSGLOBECHUNKEDENTITY_H
#define QGSGLOBECHUNKEDENTITY_H
 
#include "qgis_3d.h"
 
#define SIP_NO_FILE

 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the QGIS API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
 
 
#include "qgschunkedentity.h"
 
#include "qgschunkloader.h"
#include "qgscoordinatetransform.h"
#include "qgsdistancearea.h"
#include "qgs3drendercontext.h"
 
#include <QImage>
 
class QgsMapLayer;
class QgsGlobeMapUpdateJobFactory;
class QgsTerrainTextureGenerator;
 
class QgsGlobeChunkLoader : public QgsChunkLoader
{
    Q_OBJECT
  public:
    QgsGlobeChunkLoader( QgsChunkNode *node, const Qgs3DRenderContext &context, QgsTerrainTextureGenerator *textureGenerator, const QgsCoordinateTransform &globeCrsToLatLon );
    void start() override;
 
    Qt3DCore::QEntity *createEntity( Qt3DCore::QEntity *parent ) override;
 
  private:
    Qgs3DRenderContext mRenderContext;
    QgsTerrainTextureGenerator *mTextureGenerator;
    QgsCoordinateTransform mGlobeCrsToLatLon;
    int mJobId = -1;
    QImage mTexture;
};
 

class QgsGlobeMapUpdateJob : public QgsChunkQueueJob
{
    Q_OBJECT
  public:
    QgsGlobeMapUpdateJob( QgsTerrainTextureGenerator *textureGenerator, QgsChunkNode *node );
    void start() override;
 
    void cancel() override;
 
  private:
    QgsTerrainTextureGenerator *mTextureGenerator = nullptr;
    int mJobId = -1;
};
 
class QgsGlobeChunkLoaderFactory : public QgsChunkLoaderFactory
{
    Q_OBJECT
  public:
    QgsGlobeChunkLoaderFactory( Qgs3DMapSettings *mapSettings );
 
    ~QgsGlobeChunkLoaderFactory() override;
 
    QgsChunkLoader *createChunkLoader( QgsChunkNode *node ) const override;
 
    QgsChunkNode *createRootNode() const override;
 
    QVector<QgsChunkNode *> createChildren( QgsChunkNode *node ) const override;
 
  private:
    Qgs3DMapSettings *mMapSettings = nullptr;
    QgsTerrainTextureGenerator *mTextureGenerator = nullptr; // owned by the factory
    QgsDistanceArea mDistanceArea;
    QgsCoordinateTransform mGlobeCrsToLatLon;
    double mRadiusX, mRadiusY, mRadiusZ;
};

class _3D_EXPORT QgsGlobeEntity : public QgsChunkedEntity
{
    Q_OBJECT
 
  public:
    QgsGlobeEntity( Qgs3DMapSettings *mapSettings );
    ~QgsGlobeEntity() override;
 
    QList<QgsRayCastHit> rayIntersection( const QgsRay3D &ray, const QgsRayCastContext &context ) const override;
 
  private slots:
    void invalidateMapImages();
    void onLayersChanged();
 
  private:
    void connectToLayersRepaintRequest();
 
  private:
    std::unique_ptr<QgsGlobeMapUpdateJobFactory> mUpdateJobFactory;

    QList<QgsMapLayer *> mLayers;
};
 

 
#endif // QGSGLOBECHUNKEDENTITY_H